摘要
以TiC、VC、Co、Ni为原料,通过粉末冶金的方法制备了(Ti,V)C基金属陶瓷,结合XRD、SEM&EDS及力学性能测试研究了n_(Ti)/n_V对(Ti,V)C基金属陶瓷显微组织和力学性能的影响以及(Ti,V)C基金属陶瓷烧结后的物相变化。结果表明:经高温烧结后TiC和VC固溶形成立方相(Ti,V)C。当n_(Ti)/n_V从4增加到15.75时,(Ti,V)C基金属陶瓷的硬度变化波动较小,抗弯强度先增加后降低。当n_(Ti)/n_V=7.35时,(Ti,V)C基金属陶瓷的显微组织得到细化,抗弯强度为1 237 MPa,维氏硬度为1 444 N/mm^2,综合力学性能较佳。
（Ti,V）C-based cermets were prepared with raw materials of TiC, VC, Co and Ni by powder metallurgy method.XRD, SEM＆EDS analysis and mechanical properties tests were used to investigate the effect of nTi/nV on the microstructure and properties of the（Ti,V）C-based cermets. The phase transformation of the（Ti,V）C-based cermets after sintering was also investigated. The results show that TiC and VC forms（Ti,V）C solid solution after sintering. When increasing nTi/nV from 4 to 15.75, the hardness of the cermets slightly changes, and the blending strength of the cermets firstly increases and then decreases. When nTi/nV is 7.35, the microstructure of the cermets is refined, the blending strength is 1 237 MPa, the Vickers hardness is 1 444 N/mm2, the（Ti,V）C-based cermets has the best mechanical properties.
作者
王淅茹
张雪峰
陈敏
Wang Xiru Zhang Xuefeng Chen Min(School of Materials Science and Engineering, Xihua University, Chendu Sichuan 610039, China School of Materials Engineering, Panzhihua University, Panzhihua Sichuan 617000, China)
出处
《硬质合金》
CAS
2017年第3期150-154,共5页
Cemented Carbides
基金
四川省科技支撑计划项目(No.16ZC1774)
攀枝花市创新人才培养项目(No.2015TX-11)
攀枝花市科技支撑项目(No.2015CY-G-18 No.2014CY-G-26-1)
